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Fuel Pressure Regulators-ITR vs B16A2

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Fuel Pressure Regulators-ITR vs B16A2

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    Fuel Pressure Regulators-ITR vs B16A2

    My stock regulator on my b18CR has a smaller fuel return line diameter than my b16a2 fuel return line.

    So i swapped the FPR's over, i had to slightly bend the top vacume line to line up to the hose better.

    My Question, do the FPR flow different amounts and will my b16a2 FPR be fine on my type R motor using Type R injectors?

    #2
    Put the R regulator back on.

    Comment


      #3
      The fuel feed line on the type R one is the wrong size.
      Many people told me this would be fine so ill keep using the B16a one

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        #4
        Do you understand that there is a significant difference in the B16's fuel pressure and the ITR fuel pressure?

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          #5
          Thats my question can anyone give me proof?
          I understand that they both run the same rail pressure and injector size

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            #6
            Look in the Helm manual for each car. B16 = ~35psi while ITR is ~50psi.

            My ITR regulator runs 50psi with the vacuum tube off. I use two worm clamps on the return line because of the size difference.

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              #7
              is there a difference in b18a vs b16?

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                #8
                not that I know of. IIRC the B18a FPR is also in the mid 30psi range.

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                  #9
                  Thanks for the info Archon
                  so u just did up the fuel return line heaps with two clamps?
                  do u get any leaking? I was gonna do that but was told not to?

                  On a side note can i run my b18CR injectors with my B16A2 OBD1 Vtec ECU?
                  are the the same resistance etc? I have already changed the plugs over

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                    #10
                    I get no leaking. I think the return line pressure is much lower than the fuel rail pressure. I can probably get away with using one clamp. Just make sure you press the hose on as far as it will go on and then clamp the hose.

                    As far as I know, OBD2 and OBD1 injectors are both high impedance. You can verify that with an ohm meter.

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